DE69225354T2 - Wrinkled absorbent particles with a large effective surface and high absorption speed - Google Patents

Wrinkled absorbent particles with a large effective surface and high absorption speed

Info

Publication number
DE69225354T2
DE69225354T2 DE69225354T DE69225354T DE69225354T2 DE 69225354 T2 DE69225354 T2 DE 69225354T2 DE 69225354 T DE69225354 T DE 69225354T DE 69225354 T DE69225354 T DE 69225354T DE 69225354 T2 DE69225354 T2 DE 69225354T2
Authority
DE
Germany
Prior art keywords
polymers
subject invention
effective surface
high absorption
wrinkled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69225354T
Other languages
German (de)
Other versions
DE69225354D1 (en
Inventor
Frederick W Stanley
Jack C Lamphere
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sorbent Therapeutics Inc
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24695229&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69225354(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of DE69225354D1 publication Critical patent/DE69225354D1/en
Publication of DE69225354T2 publication Critical patent/DE69225354T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/32—Polymerisation in water-in-oil emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26—Synthetic macromolecular compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Hematology (AREA)
  • Analytical Chemistry (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The subject invention pertains to large particle size, attrition-resistant, continuous, but wrinkled, high surface area aqueous fluid absorbent polymers, preferably of a crosslinked acrylic acid or acrylate. These absorbents have absorption rates superior to spherical absorbents. The subject invention further pertains to a process of preparing such polymers comprising suspension polymerization with an at least partially oil phase soluble initiator. The subject invention further pertains to absorbent structures containing such polymers, and to the use of such polymers therein.
DE69225354T 1991-03-19 1992-03-14 Wrinkled absorbent particles with a large effective surface and high absorption speed Expired - Lifetime DE69225354T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67161691A 1991-03-19 1991-03-19

Publications (2)

Publication Number Publication Date
DE69225354D1 DE69225354D1 (en) 1998-06-10
DE69225354T2 true DE69225354T2 (en) 1998-12-03

Family

ID=24695229

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69225354T Expired - Lifetime DE69225354T2 (en) 1991-03-19 1992-03-14 Wrinkled absorbent particles with a large effective surface and high absorption speed

Country Status (8)

Country Link
US (1) US5744564A (en)
EP (1) EP0516925B1 (en)
JP (1) JP3258660B2 (en)
AT (1) ATE165751T1 (en)
AU (1) AU1752292A (en)
DE (1) DE69225354T2 (en)
MX (1) MX9201201A (en)
WO (1) WO1992016565A1 (en)

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* Cited by examiner, † Cited by third party
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US6713661B1 (en) 1998-04-28 2004-03-30 The Procter & Gamble Company Absorbent articles providing improved fit when wet
US6514615B1 (en) 1999-06-29 2003-02-04 Stockhausen Gmbh & Co. Kg Superabsorbent polymers having delayed water absorption characteristics
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US6239230B1 (en) 1999-09-07 2001-05-29 Bask Aktiengesellschaft Surface-treated superabsorbent polymer particles
US6391451B1 (en) 1999-09-07 2002-05-21 Basf Aktiengesellschaft Surface-treated superabsorbent polymer particles
US6376618B1 (en) 1999-09-07 2002-04-23 Basf Aktiengesellschaft Surface-treated superabsorbent polymer particles
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US6323250B1 (en) * 1999-11-18 2001-11-27 Nippon Shokubai Co. Ltd Method for production of porous material
US6395793B1 (en) * 1999-11-18 2002-05-28 Nippon Shokubai Co., Ltd. Method for production of porous material
US6274638B1 (en) 1999-11-19 2001-08-14 Nippon Shokubai Co., Ltd. Method for production of porous cross-linked polymer material
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US6433058B1 (en) 1999-12-07 2002-08-13 Dow Global Technologies Inc. Superabsorbent polymers having a slow rate of absorption
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AU2002322368A1 (en) * 2001-06-29 2003-03-03 Dow Global Technologies Inc. Superabsorbent carboxyl-containing polymers with odor control
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WO2003002089A1 (en) * 2001-06-29 2003-01-09 Dow Global Technologies Inc. Superabsorbent carboxyl-containing polymers with odor control properties and method for preparation
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US7311968B2 (en) 2004-06-30 2007-12-25 The Procter & Gamble Company Absorbent structures comprising coated super-absorbent polymer particles
MXPA06001291A (en) 2003-08-06 2006-04-11 Procter & Gamble Coated water-swellable material.
CN100441235C (en) 2003-08-06 2008-12-10 宝洁公司 Absorbent article comprising coated water swellable material
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US7049000B2 (en) 2003-08-06 2006-05-23 The Procter & Gamble Company Water-swellable material comprising coated water-swellable polymers
EP1518567B1 (en) 2003-09-25 2017-06-28 The Procter & Gamble Company Absorbent articles comprising fluid acquisition zones with coated superabsorbent particles
DE60320255T2 (en) 2003-09-25 2009-05-14 The Procter & Gamble Company, Cincinnati Absorbent articles containing superabsorbent polymer particles having a non-covalently bonded coating
CN100422230C (en) 2004-01-28 2008-10-01 大日本油墨化学工业株式会社 Method for producing core-shell high liquid-absorbing resin particle
WO2005075070A1 (en) * 2004-02-05 2005-08-18 Nippon Shokubai Co., Ltd. Particulate water absorbing agent and method for production thereof, and water absorbing article
WO2005095498A1 (en) 2004-03-30 2005-10-13 Basf Aktiengesellschaft Improved method of manufacturing superabsorbent polymers
SG187519A1 (en) * 2004-08-06 2013-02-28 Nippon Catalytic Chem Ind Particulate water-absorbing agent with water-absorbing resin as main component, method for production of the same, and absorbing article
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Also Published As

Publication number Publication date
US5744564A (en) 1998-04-28
WO1992016565A1 (en) 1992-10-01
JP3258660B2 (en) 2002-02-18
JPH06506252A (en) 1994-07-14
DE69225354D1 (en) 1998-06-10
EP0516925A1 (en) 1992-12-09
AU1752292A (en) 1992-10-21
EP0516925B1 (en) 1998-05-06
ATE165751T1 (en) 1998-05-15
MX9201201A (en) 1992-10-01

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Legal Events

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8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: SORBENT THERAPEUTICS, INC., VERNON HILLS, ILL., US